Combined mill tee and stuffing box



Jan. 1 1924. 1,479,656

R. FETTERLEY COMBINED MILL TEE AND STUFF'ING BOX Filed July 29. 1920 SMOM/kou Patented Jan. 1, 1924.

UNITEDv STATES RALPH FETTERLEY, OE AKRON, OHIO'.

COMBINED MILL TEE AND S'IUFEINGk BOX.

Application mea July 29, wao.V serial No. '399335.

Tol all whom t may concern.'

Be it known that I, RALPH FETTERLEY,

a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented new and useful Improvements in Combined Mill Tees and Stuliing Boxes, of which the following is a specification.

This invention relates to new and useful improvements in mill tees and for the stuffing boxes therefor and has particular reference to a combined tee and stuffing box adapted to be used on rubber mills and the like wherein it is necessary or desirable to create a circulation of water within a mill roll for the purpose of either cooling or heating the same. y

Objects of the invention are to provide a strong, durable device of the character above indicated which will be of simple, economical construction and which will be extremely efhcient and reliable in use.

A particular object is to provide a mill tee construction wherein the pipe which carries the water into a mill roll may be quickly and easily removed therefrom and cleaned or ,a new pipe substituted without stopping the machine. v

A further object is to provide a mill tee and a stuffing box therefor whichwhen aty tached tothe mill will provide a circulation of water through the millv rolls without leakage and which will be substantially noiseless in operation.

The above and additional objects are ac- Y complished by the novel construction, combination and arrangement of parts hereinafter described and illustrated in the accom panying drawing, in which I have shown a preferred embodiment of the invention, it being understood Athat the invention is capable of various adaptations and that changes and modifications may be made or substitutions resorted to which come within the scope of the claims hereunto appended.

In the drawings in which similar numerals of reference are used to designate corresponding parts throughout the several views, and in which,

Figure 1 is a side elevationof a portion of a rubber mill in which the rolls are indicated by dotted lines and particularly illustrating the manner of attaching thereto a device constructed in accordance with this invention. l

Figure 2 is a central, vertical sectional view of a mill roll having portions omitted i and also showing mycombinedmill tee and .stuffing box in side elevation and illustrating more clearly the manner'of securingthe,

same to the said roll.

. Figure 3V isa plan view of one of the partsv used in carrying out the invention. l l

Figure 4c 1s a. central vertical sectional view taken as indicated by the line Hof Figure 1 andshowing a device constructedv in accordance with this invention operatively attached to a mill roll, only a portion ofthe roll being shown. Figure 5 is a vertical sectional view taken as indicated by the lines 5.-5 ofFigure 4.

'iov

Proceeding now to a `detaileddescription of the invention, 'the numeral `6 lis used to 'y denote a mill frame and the numeral 7 denotes a mill roll. Two rolls7 are usually employed in the ordinary mill as illustrated by the dotted lines inFigure 1. `Each roll and thedriving gears are ordinarily secured directly thereto. The other end 8 `is hollow, being provided with a cylindrical cavity 1.() which communicates `with the roll cavity 111.1 Thelend of theporti'on 8 terminates inl a seriesV of circumferentially ,disposed Asteps and is provided with a cover 12 which is se.- cured thereto by the bolts 13 or other suitablevmeans. The cover 12 is'provided with a centrally positioned threaded bore v14: which is disposed therein coaxiallyl with the roll 7 A tube `5 which is provided on eachiend with screw threads is screwed into thefbore 14 so as'to rotate with thelrolls 'onnits axis. The threads in the tube 15 and in thebore 14 being either right or left hand, according to the desired directionfof'rotation of the roll 7` so that the tube15 when 'screwed therein will not be unscrewed by the operationof the mill. A'collar 16 .is adjustably screwed to the tube 15 by the said screw 17 or other suitable means and a casing l8`is fitted over, the` said tube 15 so as to form a gland box and a support forthe'inlet pipek 19` and the outlet pipe 20. The borein the casing 18 is reduced adjacent its inner end to provide threaded and screwed upon the" outwardly projecting end of the tube so that the packing' material 23 will be compacted between the inclined shoulder* 22 and the inl clined face of the ring 24`V and forced into close.V contact with theV outer .surface of the tube 15. The inner portion ofthe ring 24 is cut away .adjacentits .outer Vlateral face and the saidouter portion isprovided on its inner circumferential face with a circum ferentiall'y extending rgroove 26rin`to which attool may beinserted to remove the ring frornfthel packing vgland.V The collar 25 lis provided witha plurality of bores 27 which extend into the outer lateral side thereof so as`to providea seatrfor a tool or wrench which. maybe inserted therein for the purposefof screwing the collar 25`on to or removing it from the tube 15. The outer por tion of 4'the bore in the casing18 is further enlargedland'the casingis interiorly threaded tofeiigage the threads of the exteriorly threaded; cap 28 which is arranged to close the outer e-nd'of the casings. rllhe cap 28 is providedf with Ia centrally positioned outwardly 'protruding roctagonal portion 29 adapted to b e4 engagedrby the jaws of a wrench-for the purpose .of screwing or unscrewing thei'cap'28 from said casing. A

Y boss 30 extends upward from-the top of the casingY 18 adjacent itsfouter end and a similiarboss 31 extends-downwardly from the underside Yof said casing.` Both of the bosses 30 and'31`are pro-vided with a 'threaded' bore and the inlet pipe 19 is screwed into the bore'dn thebossl 30 andthe outlet pipe 20 is similarly lsecuredin the boss 31. A supporting member 32v is' positioned in thercavity 19 in the reduced end 8 of the roll 7 .y They said member v32 comprises a hub 33 with spokes .34..` The spokes 34 are provided with boresr :335, into whichthe rods 36 areV secured', the. other yends of each rod being threaded and screwed into the threaded bores 37` in the"L cover 12. n V

yThe pipe 39 extends through the tube 15 with 'its exterior wall arranged in spaced concentricL relation with the inner wall of said tube 15 and is extended through the opening 38 in the hub 33 kat a point adjacent the other end. of the roll cavity 11. The por tionk of the pipe 39 extending into the roll cavity is provided with a plurality of bores or openings 40 which extend through the wall thereof as shown in Figures 2 and 4. The outwardly projecting end of the pipe 39 is providedwith a screw thread. as hereinbefore set forth anda tee member 41 is screwed lthe stein 46 thereof into close contact with the upper wall of the casing. rilhe tee 42 is positioned in said casing so that the bore in the stem 46 of the tee 42 coincides with the bore of the pipe 19. The other opening of the tee 42 is provided with a screw plug 47.

1t will thus be seen that water may be forced through the pipe 19 so as to flowthrough the tee 42 and into the pipe 39 and be discharged through the bores or openings 40 into the cavity 11 and that the construction is such that a space or passage 48 is provided between the exterior surface of the wall of the pipe 39 and the interior surface of the wall of the tube 15 and that a constantV stream of water Vcan be made to flow from the pipe 19 through the pipe 39 into the cavity 11 and out through the space 48' to the discharge pipe` 20. y

ln use7 rubber mills of the type illustrated inV Figure 1 are usually driven in series. rithe heavy pressure` required and the friction of the rubber on thel rolls' create a great heat and it is necessary to produce a circulation of water through the cavity 11 in said rolls. This is done by connecting the-pipe 51 to a source of water supply and operating the valve 49 in the pipe 51 and the valve 5() in the pipe 20. rlhe bore in the pipe. 39 or the bores 40 sometimes become clogged and interferes with the circulation of the water, in which case it is necessary, when an ordinary device is used, to stop the mill and in case the millsy are connected in series to stop a series of mills and remove the feed pipe to be cleaned or replaced.

,In using a device constructed in accordance with this invention, if the pipe 39v becomes clogged, the water is shut off without stopping` the mill and the cover 29 and the screw plug 47 are removed and a brush is inserted into the bore of thepipe 39 and it may be quickly cleaned without stopping the mill. ln case it cannot becleaned in this way, the screw bolt 45 is operated to release vthe upward pressure on the tee 42 and the'pipe 39 is taken out and. cleaned or replacedv as may be found necessary. The tee valve 52 is arranged on the supply line so thatv a greater supply of water maybe direct-ed` into one cylinder and' then into the other or the valve may be operated so that an equal amount of water may be directed into each rol'l orthe water may be shut off from one roll entirely.

It will thus be seen tha-t I have provided an improved device which may be operated with a minimum of friction and which may be easily and quickly cleaned without stoppino the mill.

Iipaving thus described my invention what I claim as new and desire to secure by Letters Patent is l. In a device of the class described, the combination with a mill roll having an enclosed cavity, of a tube coaxially secured thereto so as to extend outwardly therefrom with the bore of the tube communicating with said cavity, a casing surrounding the outwardly projecting portion of said tube, a packing gland in said casing, a supply pipe leading to said casing, an outlet leading therefrom, a pipe extending from said casing through said tube and into said roll, pipe supporting means in said roll, said means adapted to rotate with said roll about said pipe, a tee on the outer end of said pipe and means within said casing to detachably secure the stem of said tee against the wall of said casing with the bore in the tee communieating with the bore in said inlet pipe, substantially as and for the purpose herein set forth.

2. In a device of the class described, a

mill roll having an enclosed cavity therein, a tube rigidly secured to said roll so as to extend coaxially therefrom with the bore in the tube communicating with said cavity,a stationary casing around the outwardly projecting portion of said tube, the bore in said casing adjacent its inner end snugly fitting the said tube, the bore in said casing being enlarged to form a packing gland; means to compress packing material within said gland, the bore in said casing being further enlarged adjacent its outer end to form a fluid chamber, fluid inlet lines leading to said chamber, fluid outlet lines leading therefrom, a pipe having its outwardly proj ecting end detachably secured `in said cham-l ber and extending into said roll; means with the roll to hold said pipe coaxially therewith, said pipe provided on its outwardly projecting end with a pipe tee, the stem of which is detaohably secured against the wall of said casing with the bore of said tee communicating with the bore in said inlet line, the bore in said casing being closed at its outer end with a cover detachably secured thereto.

In testimony whereof I have hereunto set m hand.

y RALPH FETTERLEY. Y 

